Lock



J. VRBA Jan. 31, 192sf LOCK Filed May 21. 1926 2 Sheets-Sheet l ifiez/enfer 4W/y Jan. 31, 192s. 1,657,650'

A J. VRBA LOCK Filed May 21. 1926 2 Sheets-Sheet 2 Patented Jan. 31,1928.

UNITED .STATES PATENT ori-1,cr...

JAMES vRisA, or MARSHALLTOWN, iowa, y

Application filed May 21,

tion with asingle slidable plate member to retain the integra-l lockbolt in locked r unlocked position. The unlock'position of the lock boltbeing permitted only in one prearanged position of the rotatablemembers.

Another object of the invention is to pro-v vide such` rotatable memberswith means for varyingthe setting thereof for varying the combination ofletters or numerals of the controlling exterior dialsv tor afford theunlocking of the lock bolt at different combina` tions of such lettersor numerals.

With these and `other' objects in view, my invention consists in thenovel combination, construction and arrangement of the parts andVmembers Shown in the kaccompanying drawings, described in the followingspecilications and particularly pointed out in the appended; claims.

In the drawings: Figure 1, isan elevation of, a lock embodying myinvention, showing particularly the exterior view of the controllingdial on the face of a door `equipped with same.;l 1

Figure 2, is a crosssection ytaken online 2-2 of Figure 3; 1

Figure 3 is a plan view'ofthe lock with the cover 'plate removed showingthe mechanisn-r thereof in position to permit theun! locking of the lockbolt;

.Figure` 4, shows a view similar to Figure 3, with one of the rotatablemembers positioned4 to retain the lock holt in unlocked position. JReferring to the drawingswhich show a preferred? embodiment oftheinvention, 10 indicates the casing having a. side 11 riveted theretoyand rovided with openings 12 for screws 13 wfich securely retain thecasing in a door portion indicated bylfl. The bottom or side 10A ofthe-casinglO is cast withan integral lug 15whic'h`acts as a sup# port ofthe screw 16iwhich retains the re* movable cover plateilif'.AV r 1` yThe lock bolt 18` has sliding movement through an .openingin the `side.member 11 and is`l formed` integrally with a slidably mounted plateportion 184. Y

- An. auxiliary keeper bolt 19 is providedk which also operates slidablythrough an opening in the side member 1 1 and which is also providedZwith an integrally formed slidably mounted plate portion 19A. The keeperboltis formed with` the usualbeveledface 19B toaiford' its inwardlyslidably action upon the closing ofthe door. A sing-le leaf spring 20having an intermediate loop connection about the lug 10B isV arrangedto'. normally retain the lock bolt and keeper bolt Vin outward postionby the engagement of its ends with the inner ends of the plate portions18A and 19A. i

The keeper boltj 19 is provided with `an' integral projection 19.C whichis adapted to engage the front end of the plate v18A to therebysimultaneously openv or shift the lock bolt 18 uponthe. rotation? ofkthe handle 21 during. the unlocking movement ofsthe keeper bolt 19.When, however, the lock bolt 18 is in the position shown in 3 with thecombination lockingv mechanism `set to affordy its inwardY movement, thehandle 21 may berotated (anti-clockwise)v which will cause the lug 22 toengage the keeper bolt 1.9 within the recess 159?j .tomove same towardthe right or inwardly and simultaneously through theen-gagement of thepro.- jection`19C with the plate 181.*.1nove the lock bolt inwardly tounlocked position.

In order to maintain the lock bolt 18. in

-unlocked1position, I provide the slot 30. of

the upper right hand `wheel 29 with an arcuate slotv extension 30.Awhichpermits a sliglitadditional rotation of same to ythe,

position shown in` Figure 4, whereby the lug35 is so locked within Atheextension slotL 30e that au outward movement of the 'lock bolt plate1:8ftrby the springs20-` is 'preventedi The lock here shown is` providedwith sav three'controls equipped with knobs 23 set screwed to theshaftsf241 which are of square cross section. A pairof'dia'ls 25 is providedfor and fixed-to each shaft 24.` The dials 25 are provided with numeralsl25A ,'(or letters) arrangedyto register with the indicato1s-26,

Each shaft 24: extends through a square opening of an indicator member27, the hub extensions of which are rotatably mounted in openingsprovided in the side AAL and cover plate 17. The indicator membern ofeach control being xed for relative movement with the dials 25. Eachindicator member 27 is also provided with an integral arm 27^ within theend of which is xed a pin 28.

The lock bolt plate 18A` is slotted as at 118C to permit the passage ofthe hub extensions of the members 27 through same.

Upon the hub of each of the members 27 is a freely mounted wheel 29having a slot 30 and a corrugated periphery. A plain disk wheel 3l of aslightly larger fdiameter is riveted to one side of each ot' thecorrugated wheels 29, and each disk wheel 3l is also provided with aradial slot in registerwith the slot 30.

The three disk wheels 29 as shown in Fig. 3, are so positioned that theintegral lugs of the'lock bolt plate l8^ readily pass into the slots 30during the inward unlocking movement of the plates 1S and 19. Itisobvious, that the inward unlocking movement ot' the lock bolt 1S is notpermissible unless all three disk wheels 29are positioned as shown inFigure 3, topermit the passage of the lugs within the slots 30.

The disk wheels 3l might be omitted, but I prefer to employ same as theyact as a guide for the spring 32 which is of irregular shape and whichspring 32 is securely held in the slot 15^ in a manner to continuallyengage the corrugated peripheries of the three wheels 29 to thus retainthem in predetermined positions. The corrugated edge of the wheels 29alsok has the function of preventing the detection of the position ofthe slot 30l as the spaces between. the outstanding corrugations areequal to the width of the slot 30.

Each of the wheels 29 is provided with a plurality of openings 33arranged in a circle therein and consecutively numbered or lettered onthe face thereof as shown in Figures 3 and 4. `'lhese'openings 33 areadapted to receive'the pins 28 of thearms 27^ of the indicators 27whereby the indicators 27 will move relatively1 with the wheels 29. Asstated above, the dials 25 are fixed for relative movement with theyindicators 27, that is, the indicator arm 2'?A is always positionedrelatively to thedial 25 under the numeral l thereon, but the relativeposition of the indicator arms 27 A and the wheels 29 may be varied asfor instance, by reference to Figures 3 and 4, the upper left hand wheel29 is shown with its `co-operatir`1g indicator arm 27A positioned withinthe opening numbered l1, t-hus causing a registration of the exteriorcontrol dial 25 with its number 6 in register with the fixed indicator26,` but if the respective indicator arm 27A bemoved to a setting of thepin in the opening numbered 7, then the exterior control dial 25 willshow its number l0 in register with the indicator 2G. Thus all threelindicator arms 27A may be variably set to thereby vary the ,settings ofexterior dials 25.

I claim:

1. In a lock of the kind described, and in combination, a slidablymounted lock bolt, a slidable keeper bolt, a plurality of' independentlymounted rotatable members each having a single radial slot therein, eachof said rotatable members having the periphery thereof corrugated andthe width of the spaces between said corrugation being equal to thewidth of said slot, resilient means engaging said corrugated periphericsof said members, a single springl exerting pressure on said lock boltand said keeper bolt tending to retain same in locked position,aplurality ot' lugs connected with said lock bult, a plurality ofseparate and independently mounted controls for said rotatable members,and a dial for cach of' said controls adapted tor setting at varyingindications, said rotatable members being adjustable to varying relativepositions to said controls wherebyy said slotsA in said rotatablemembers may be prem-ranged to align withsaid lugs at varying indicationsof said dials to permitthe inward movement of said lock and keeperbolts.

2. A lock as embodied in claim l, and including an arcuate slotextension iny one of saidslots ot' one of said rotatable members wherebythe rotatable member with said slot vextension may be further rotated toengage one of said lugs to thereby retain said lock bolt in unlockedposition against the pressure of said single spring.

3. A lock as embodied in claim l, and including manually operable lmeans for causing a simultaneous inward movement of saidflock and keeperbolts when the said rotatable members are set to permit the in wardmovement of said lock bolt.

4f. In a lock of the kind described, and in combination, a slidablymounted lock bolt, a slidable keeper bolt, a plurality of independentlymounted, rotatable members each having single radial slot therein, eachof said rotatable members having the periphery thereof' corrugated andtl1e"\vilil1.ot the spaces between said corrugation being equal to thewidth of said slot, resilient Ameans engaging said corrugatedperipheries of said members, a single spring exerting pressure on saidlock bolt and said keeper bolt tending to retain same in lockedposition, a plurality of lugs connected with said lock bolt, a pluralityof separate and independently mounted controls for said rotatablemembers, an arcuate slot extension in one of said slots of one of saidrotatable members wherebythe rotatable member with `said slot exto alignwith said lugs at varying indications of said dialsv to permit theinward movement of said lock and keeper bolts.

5. A lock as embodied in claim #hand including manually operable meansfor vcausing a simultaneous inward movement of said lock and keeperbolts when "the said rotatable members are set to permit the inwardmovement of said lock bolt, said manually operable means also being`adapted to move said keeper bolt inwardly and independently of said lockbolt upon the retainment of said lock bolt in unlocked position.

6. In a lock of the kind described,and in combination, a casing for saidlock, a removable cover for said casing, a slidably mounted lock bolt insaid casing, a slidably mounted keeper bolt in said casing, said boltsadapted to project eXteriorly of said casing when in locked position, aplurality of independently rotatable members in said casing each havinga single radial slot therein and the periphery of each of said rotat!able members having corr'ugations and the width of the spaces betweensaid corrugations being equal to the width of said slots,

a shaft for each of said rotatable members extending throughV saidcasing and said cover therefor, resilient means engaging saidcorrugations of said rotatable members, spring means exerting pressureon said lock and keeper bolt normally retaining same in locked position,a plurality of lugsformed integrally with said lock bolt, a sleeve foreach of said shaft-s supported in said casing and cover therefor, saidsleeves being fixed for relative movementwith said shafts, saidrotatable members being loosely mounted on said sleeves and eachoit-said rotatable members having a plurality'of openings therein, anarm integral with each of said sleeves and each arm having a pintherein, each of said rotatable members being rotatably adjustablerelatively to said sleeve and integral arm whereby said pin inayengagewithin either ot said openings in said members, a

manually operable control for each otl said shafts, and a dial for eachcontrol adapted for relative movement with said sleeve cooperatingtherewith, each rotatable member being adjustable to varyingprearr'anged' relative positions to said arm of its co-operating sleevewhereby said slots in said rotat able members may be prearranged toalign with said lugs at varying positions of said dials to permititheinward"r movement of said lock and keeper bolts into unlocked position.`

In witness whereof I atlix my signature.

,ninas vRBA.

